Caption: Bone marrow cancer drug molecule. Molecular model of lenalidomide, a drug used to treat myeloma, a form of bone marrow cancer. The chemical formula is C13.H13.N3.O3. Atoms are colour-coded: carbon (black), hydrogen (grey), nitrogen (blue) and oxygen (red). Lenalidomide, first introduced in 2004, is manufactured and marketed by Celgene. It is also known as CC-5013, and is marketed as Revlimid.